sedimentary

Kambaba Jasper (Crocodile Jasper)

Fossilized Stromatolite (Cyanobacteria microfossils in silica Matrix)

Hardness: 6.5-7 on Mohs scale; Color: Dark green with black circular or orbicular patterns; Luster: Vitreous to waxy when polished; Crystal Structure: Trigonal (microcrystalline quartz); Cleavage: None

Hardness: 6
Color: Dark green with black circular or orbicular patterns
Luster: Vitreous to waxy when polished

Identified July 27, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed billions of years ago from ancient fossilized cyanobacteria (blue-green algae) stromatolites that were replaced by silica in shallow aquatic environments.

Uses & applications

Popularly used in jewelry, cut into beads, cabochons, carved points, pendants, and collected as decorative stones or metaphysical crystals.

Geological facts

Despite its common trade name 'Jasper', it is actually a stromatolite fossil composed of fossilized algae colonies embedded in microcrystalline quartz. It is often referred to as 'Crocodile Jasper' due to its reptilian-like patterns.

Field identification & locations

Recognized by its distinctive dark sea-green base with black swirled spots resembling eyes or scales. Commonly sourced from Madagascar and South Africa. Collectors look for strong contrast in the orbicular patterns.

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